Joseph schwegleb



(No Model?) I J. SQHWEG'LE-R.

WRENCH.

UNITED STATES PATENT Darren,

JOSEPH SGHWEGLER, or BUFFALO, NEW YORK, ASSIGNOR F ONE-HALF To ISIDOR SGHWEGLER, or SAME PLACE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 258,137, dated May 16, 1882.

Application filed Marchas, 1882. (No model.)

To all whom it may concern:

Be it known that I, Josnrn SCHWEGLER, of the city of Buffa-lo,'in the county of Erie and State of New York, have invented a new and useful Improvementin Wrenches, of which the following is a specification.

The object of this invention is the construction ofa wrench which can he quickly adj usted, and which is simple and durable ill construc- IO tion.

My invention consists of the peculiar construction of the wrench, which will be hereinafter fully described.

In the accompnnying drawings, Figure l is a side elevation of a wrench provided with my improvement. Fig. 2isavertical section thereof. Fig. 3 is an end elevation of the head of the wrench. Fig. 4 is a side elevation, representing a modified construction of the'head of the wrench.

Like letters of reference refer to like parts in the several figures.

A represents the handle of thewrench, and B a screw-bolt secured to the handle and provided with a right-hand screw-thread, b, and a left-hand screw-thread, c. The bolt Bis secured to the handle A by a tang, cl, extending through the handle and secured at its opposite end by a screw-nut, E, or any other suitable means. A portion ofthe tang d is made square or angular, so that the bolt 13 turns with the handle A.

F represents the upperjaw, provided with a screw-threaded opening, in which the righthand screw 1) works, and G represents the lowerjaw, having a screw-threaded opening, lll which theleft-hand screw 0 works.

h h are guide pins or rods, which are secured to the upper jaw and pass through openings 4 z' in the lower jaws, whereby the jaws are retained in a parallel position, but permitted to move toward and from each other in the direction of the guide-rods h. The contiguous faces of the jaws are preferably recessed on V 5 one side of the screw-bolt B, as shown at k, whereby the openings betweenthcjaws on op posite sides of the screw-bolts, when the jaws areopened, are made of difierent size, thereby enabling the jaws to grasp screw-nuts of two different sizes without changing the position of the jaws; or, if preferred, one of the grasping-jaws may be arranged on one side of the screw-bolt only, and one of the jaws may be provided on the opposite side of the screw-bolt with ahead, I, as represented in Fig. 4, which 5 enables the device to be used for a hammer. Upon holding the jaws with one hand to prevent them from turning, and turning the handle, with the screw-bolt attached thereto, with the other hand, both jaws are caused to travel toward or from each other on their respective portions of the screw-bolt, according to the direction in which the screw-bolt is turned. In this manner the jaws are quickly adjusted.

The length of the right and left hand screwthreads b 0 is such that both jaws reach the ends of the respective screws on which they work simultaneously, whereby the separating movement of the jaws is arrested by the lower jaw coming in contact with the end of the'han- 7o dle, thereby preventing the upper jaw from moving farther and becoming detached from the screw-bolt.

I claim as my invention 1. The combination, with the handle A and the right and left hand screw B, secured thereto, of the jaws F G, provided with screwthreaded openings, through which the right and left hand portions 1) and c of the screw 13 .work, and means whereby both jaws are re- Witnesses:

Jlvo. J. BONNER, CHAS. F. GEYER. 

